85452. In the manufacturing of lead shots, the property of surface tension is utilised.
85453. The velocity at which the turbulent flow starts is known as higher critical velocity.
85454. According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)
85455. The specific weight is also known as weight density.
85456. In a lockgate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)
85457. The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)
85458. According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.
85459. The force per unit length is the unit of
85460. The shear stress-strain graph for a non-newtonian fluid is a curve.
85461. The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.
85462. The viscosity of water at 20°C is
85463. The rise of liquid along the walls of a revolving cylinder about the initial level is __________ the depression of the liquid at the axis of rotation.
85464. The discharge through a channel of rectangular section will be maximum, if
85465. When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
85466. The mercury does not wet the glass. This is due to the property of the liquid known as
85467. The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
85468. The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.
85469. According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)
85470. When the venturimeter is inclined, then for a given flow it will show __________ reading.
85471. When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
85472. The specific weight of compressible fluids does not remain constant.
85473. The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called
85474. In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as that of the atmosphere.
85475. Newton's law of viscosity is a relationship between
85476. The pressure of air __________ with the increase of height from the surface of the earth.
85477. The sheet of water flowing over a notch or a weir is known as
85478. A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.
85479. A flow in which the quantity of liquid flowing per second is not constant, is called
85480. In a sharp-crested weir, the thickness of the weir is kept less than half of the height of water above the crest of the weir.
85481. The specific gravity of an oil whose specific weight is 7.85 kN/m3, is
85482. The body will float if the force of buoyancy is __________ the weight of the liquid displaced.
85483. The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
85484. The velocity of liquid flowing through an orifice varies with the available head of the liquid.
85485. The force of buoyancy is always __________ the weight of the liquid displaced by the body.
85486. The coefficient of discharge is the ratio of dieoretical discharge to the actual discharge through an orifice.
85487. The quantity of a liquid flowing per second through a section of a pipe or a channel is called discharge and is measured in cumecs (m3/s).
85488. The purpose of a surge tank is
85489. A fluid which obeys the Newton's law of viscosity is termed as
85490. The divergent portion of a venturimeter is made longer than convergent portion in order to
85491. In a venturiflume, the flow takes place at
85492. The discharge in an open channel corresponding to critical depth is
85493. The pressure of liquid at throat in a venturimeter is __________ than that at inlet.
85494. A fluid whose viscosity changes with the rate of deformation or shear strain is known as non-newtonian fluid.
85495. When the flow in an open channel is gradually varied, the flow is said to be
85496. When the Mach number is equal to unity, the flow is called sonic flow.
85497. The total pressure on the bottom of a closed cylindrical vessel completely filled up with a liquid is the sum of the total centrifugal pressure and the weight of the liquid in the vessel.
85498. A weir, generally, used as a spillway of a dam is
85499. A thick liquid like a syrup has a __________ viscosity than a light liquid like water.
85500. The total pressure on the top of a closed cylindrical vessel competely filled up with a liquid is
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